SIFT BEARING STORE CATALOG

745/742TimkenTapered Roller

745/742 is a Timken tapered roller bearing, bore 59.93 mm, O.D. 150.09 mm, width 46.67 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d59.93mm
Outside dia. D150.09mm
Width B46.67mm
Dynamic Cr318kN
Static C0r417kN
Weight4.29kg
Cr / C0r0.76
Mean dia. dm105mm

Original catalogue drawing - Timken TRB Catalog, page 226

745/742 Timken Tapered Roller bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdBOutside dia. D150.09 mmBore d59.93 mmWidth B46.67 mmCup width C36.51 mm

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

SymbolDimensionmminch
dBore diameter59.9312.3595
DOutside diameter150.0895.909
BInner-ring / bearing width46.6721.8375
TOverall assembly width44.451.75
CCup / outer-ring width36.5121.4375
rChamfer (min)3.30.1299

Notes

Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)59.931
Bore d (in)2.3595
Outside dia. D (mm)150.089
Outside dia. D (in)5.9090
Width B (mm)46.672
Overall width T (mm)44.450
Overall width T (in)1.7500
Cup width C (mm)36.512

Load ratings & speeds

Basic dynamic load rating Cr (lbs)71400
Basic static load rating Cor (lbs)93800
Basic dynamic load rating Cr (N)318000
Basic static load rating C0r (N)417000
Dynamic rating C1 (N, ISO)318000
Dynamic rating C1 (lbf, ISO)71400
Radial rating C90 (N)82400
Radial rating C90 (lbf)18500
Thrust rating Ca90 (N)45900
Thrust rating Ca90 (lbf)10300
Static rating C0 (N)417000
Static rating C0 (lbf)93800
Factor e0.33
Factor Y1.84
Factor K1.80
Geometry factor G1159.6
Geometry factor G226.3
Geometry factor Cg0.0898
Effective load centre a (mm)-11.9

Weight

Weight (kg)4.29
Cone weight (kg)3.2
Cup weight (kg)1.07
Total weight (kg)4.27

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)75.0
Shaft shoulder db (mm)81.0
Housing shoulder Da (mm)142.0
Housing shoulder Db (mm)134.0
Cage projection Aa (mm)1.8
Cage projection Ab (mm)1.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
479,5001023,386
653,00039213,083
839,7501,02434,133
1031,8002,15471,814
1521,2008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 318,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandTimken
Source catalogueTimken Tapered Roller Bearing Catalog (2016)
Catalogue pagep.226 (dimensions) / p.43 (cone) / p.43 (cup)
Series typeTS

ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
745-S/742TimkenTapered Roller63.5150.0946.67377 kN4.17
745-S/742DTimkenTapered Roller63.5155.57101.6656 kN9.77

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
66589/66520TimkenTapered Roller59.97122.2431.75-1.65
66589/66522DTimkenTapered Roller59.97129.9869.85319 kN3.94
28980/28919TimkenTapered Roller59.9899.9825.4-0.76
28980/28921TimkenTapered Roller59.9810025.4106 kN0.75
28980/28921DTimkenTapered Roller59.9810055.56185 kN1.67
66586/66520TimkenTapered Roller59.98122.2431.75155 kN1.63
65235/65500TimkenTapered Roller59.8812744.45-2.6
39236/39412TimkenTapered Roller59.99104.7822115 kN0.74

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